What is a .app domain and how does it work?
What is .app?
.app is a generic top-level domain (gTLD) that was introduced in 2018. It is operated by Google Registry. The extension is intended for applications, mobile apps, and related services, but anyone can register one.
One of its key features is that it is on the HSTS (HTTP Strict Transport Security) preload list, meaning all .app websites must use HTTPS. This ensures encrypted connections and prevents downgrade attacks.
How Does It Work?
Registering a .app domain works like any other domain: you choose a registrar, check availability, and pay an annual fee (typically $10–$20). Once registered, you can set up DNS records to point the domain to your web host.
Because HTTPS is mandatory, you'll need an SSL certificate. Many registrars and hosting providers offer free SSL certificates (e.g., Let's Encrypt), making it easy to comply.
Why Choose .app?
.app is a good choice for app developers, tech companies, and anyone wanting a secure, modern domain. The forced HTTPS adds a layer of security and can improve user trust.
It's also a short, memorable extension that clearly signals a connection to applications. However, it may not be as universally recognized as .com, so consider your audience.
- Launched in 2018 by Google.
- HTTPS required for all .app sites.
- Suitable for apps and tech projects.
- Registration costs around $10–$20 per year.
Common mistakes
- Thinking .app domains are only for mobile apps—they can be used for any website.
- Assuming you can use HTTP; all .app sites must use HTTPS, so you need an SSL certificate.
- Believing .app is a country-code TLD; it's a generic TLD managed by Google.